<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@yield('title')</title>
    @yield('css')
</head>
<body>
    <header>头部</header>
    <article>
        @yield('art')
    </article>
    <footer>底部</footer>
    @yield('js')
</body>
</html>